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AIRCRAFT MAINTENANCE PREDICTIVE ANALYSIS (Data Mining) 25 Jan 07 OKLAHOMA CITY AIR LOGISTICS CENTER TEAM TINKER Mr. Bob Wright OC-ALC/ENFO Robert.wright@tinker.af.mil I n t e g r i t y - S e r v i c e - E x c e l l e n c e Problem

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aircraft maintenance predictive analysis data mining 25 jan 07

AIRCRAFT MAINTENANCE PREDICTIVE ANALYSIS(Data Mining)25 Jan 07

OKLAHOMA CITY

AIR LOGISTICS CENTER

TEAM TINKER

Mr. Bob Wright

OC-ALC/ENFO

Robert.wright@tinker.af.mil

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

problem
Problem

Many USAF airframe’s average age are at or beyond design limits and experiencing growing unpredicted component failures

Current damage analyses for structural components do not consider extensive maintenance activity accomplished on these airframes

Much relevant maintenance data (description of defects found, or repair accomplished) is either captured on paper only, or not captured at all; and not related to a specific a/c

slide3

Mil-Std-1530 Requirement

MIL-STD-1530C (Aircraft Structural Integrity Program)

5.4.3.1 Structural maintenance database development.

The structural maintenance database shall be developed to capture adequate, detailed information on the aging processes (fatigue, corrosion, delaminations, etc.) which occur in the aircraft and thus support the ongoing evaluation of structural integrity during sustainment. The database shall be developed to record all significant damage findings such as cracks, corrosion, and/or delaminations discovered during program depot maintenance, analytical condition inspections, time compliance technical order (TCTO) structural inspections, teardown inspections, and normal operational maintenance. The database shall also be able to record a description of the damage types, damage sizes, damage locations, inspection techniques (including POD information), aircraft configuration, pertinent aircraft usage history including basing information, and corrosion preventive methods (e.g., wash cycles, coatings, etc.). The database shall also be able to record all significant repairs and/or modifications so as to maintain configuration control. These records shall include a description of the repair/modification and when it was incorporated. Additional considerations for data to be recorded shall facilitate the analysis update described in 5.5.6.

what is needed
What is Needed

Provide quantitative information for decisions related to individual aircraft and fleet system health.

Acquire, consolidate, and evaluate maintenance data to provide a continual update of the health of operational aircraft.

Significant damage findings during PDM

Analytical Condition Inspections/results

TCTO structural Inspections/results

Field -3 repairs

Identify/use existing Air Force systems when possible

Depot and Field level (i.e. CAMS, PDMSS, G081, etc.)

Provide alternative solutions for data short falls.

Damage size, type, and location.

Pictures/Diagrams

Basing information,

Modification and repair actions.

functional requirements for maintenance data analysis
Functional Requirements forMaintenance Data Analysis

327th ASW ASIP managers need trending analysis relating actual defects found to aircraft usage

76 MXW needs to anticipate incoming non predicted defects based on aircraft usage and PDM history ASIMIS / G050

ASC and Fleet Viability Board need to view current fleet status and future repair requirements to determine best course of action for airframes

using usage data and mx information to anticipate structural failures
Using usage data and mx information to anticipate Structural Failures

Proposed Vision

New Mil-Std 1530C Task V (sustainment) goal

ASIMIS

Usage Monitoring

G050

Structural Models

Assessment

Actual Fleet Condition

Reporting

Inspection

Fidelity

Damage

Findings

76 MXW

asimis aircraft usage reporting
ASIMIS Aircraft Usage Reporting
  • Usage data available via web-based tool called DART
  • Flight loads recorder data can be accessed via web system called ADADS
slide8

Maintenance Data Collection

  • Consolidates the following data
      • NDI Log
      • AFMC 202’s (Technical Assistance Requests)
      • T.O. 00-25-107 (Tech Manual for Requesting Maintenance Assistance)
      • AFTO 349
      • AFTO 95 Corrosion Data
      • AFTO 427 Integral Fuel Cell Repairs
      • Structural Audit Findings
  • Graphical User Interface (GUI)
      • Data retrieval & Analysis
      • Eventually data input
76 amxg qiq proposed projects
76 AMXG/QIQ Proposed Projects

Automated Process Guide – Automates inspection processes utilizing mobile data collection devices

Ensures standardization and complete inspections

More accurate tie to WUC and HMC technical data codes

Labor Analysis – Provides visibility into work flow including back shops and support processes

Flags labor problem areas for individual analysis

Low Percent Analysis – Anticipates incoming non predicted defects based on aircraft usage and PDM history (not a reliability study!!)

Quality Data Analysis – Analyzes aircraft defects to provide root cause and trend analysis

support requirements for maintenance data analysis
Support Requirements forMaintenance Data Analysis

ASIMIS collects usage history per tail number

Flight hours, landings, fuel offloads, time @ mach/alt

76 MXW will collect defect/repair information per tail number

We still need tools to query defect information captured during maintenance and display against usage data to enable trending analysis

point of contacts
Point of Contacts

Randel Bowman, 76 AMXG/QIQ

E-mail: randel.bowman@tinker.af.mil

Bob Wright, OC-ALC/ENFO

E-mail: robert.wright@tinker.af.mil

Ken Simmons, OC-ALC/ENET

E-mail: kenneth.simmons@tinker.af.mil